Tika Jar文件提取示例

本文概述

• Tika PackageParser构造函数
• Tika PackageParser方法

为了提取Jar(Java ARchive)文件, Tika提供了PackageParser类。此类用于从Jar文件提取内容和元数据。它位于org.apache.tika.parser.pkg包中, 并包含下表中列出的各种构造函数和方法。

Tika PackageParser构造函数

Tika PackageParser方法

Tika PackageParser示例

package tikaexample;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.pkg.PackageParser;
import org.apache.tika.sax.BodyContentHandler;
import org.xml.sax.SAXException;
public class JarFileExample {
	public static void main(String[] args) throws IOException, SAXException, TikaException {
		 BodyContentHandler handler   = new BodyContentHandler();
		 PackageParser parser         = new PackageParser(); // It is used to extract archive file.
		 Metadata metadata            = new Metadata();
		 ParseContext pcontext        = new ParseContext();
		 try (InputStream stream = new FileInputStream(new File(
		 "/home/sssit/irfan/tika/example/tikaexample/src/main/java/tikaexample/myjar.jar"))) {
		        parser.parse(stream, handler, metadata, pcontext);
	     System.out.println("Document Content:" + handler.toString());
	     System.out.println("Document Metadata:");
	     String[] metadatas = metadata.names(); 
	     for(String data : metadatas) {
	         System.out.println(data + ":   " + metadata.get(data));  
	     }
		 }catch(Exception e) {System.out.println("Exception message: "+ e.getMessage());}
	   }
	}

输出

Document Content:
META-INF/MANIFEST.MF
Manifest-Version: 1.0
Created-By: 1.7.0_01 (Oracle Corporation)
Main-Class: First





First.class
public synchronized class First {
    void First();
    public static void main(String[]);
}
Document Metadata:
Content-Type:   application/zip